JPH04132565A - Therapeutic apparatus for muscle disease by stimulation of muscle fiber - Google Patents

Abstract

PURPOSE:To enable the providing of common information between a person to be treated and a therapist by arranging electrodes mounted at a part of a muscle disease to apply a stimulating potential as stimulation electrode for the first specified time and to measure an active potential as leader electrode for the subsequent specified time, which enables the performing of an alternate change between the stimulation and conduction to allow the learning of an effective value of treatment applied to an affected part simultaneously with the treatment. CONSTITUTION:In order that a potential is applied to a joint part 2 as affected part of a muscle disease to excite muscle fibers. electrodes 4a and 4b are used as stimulation electrode to perform a power amplification of an output from a variable type low frequency oscillator 9 up to a necessary stimulating current value with a power amplifier 10. Then. the output is supplied to a gate circuit 6 through a meter 11 for monitoring current. The gate circuit 6 is turned ON and OFF alternately according to a clock/pulse from a clock/pulse generator 7. On the other hand, during an OFF period. an active potential generated by the muscle fibers when the muscle contracts at the affected part caused by the stimulating potential applied during the ON period is detected using the electrodes 4a and 4b as leader electrode and a waveform thereof is displayed and recorded with a display/recorder 12 through a DC amplifier 8. The waveform is compared with the waveform displayed and recorded of the stimulating potential thereby enabling the learning of how the muscle moves to the stimulation applied.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for treating muscle diseases caused by developmental defects, trauma, or diseases.

[Conventional technology]

Conventional muscle disease treatment devices record the action potentials generated by the excitation of muscle fibers during muscle contraction into an electromyogram via lead-out electrodes attached to the affected area, diagnose the disease state, and then There is a device that applies an electric potential via a stimulation electrode attached to a joint where muscle weakness or muscle atrophy is occurring, and uses external stimulation to excite the muscle fibers and promote a return to normal excitement. This includes something called a low-frequency therapy device for physical therapy, and this low-frequency therapy device has recently been widely and easily used as a device that directly stimulates muscles.

On the other hand, methods of determining the therapeutic effects of these muscle fiber stimulation therapies include recording the movement of the affected area using video, or generating signals from the spring pressure when bending a joint against a spring attached to the affected area. It was common to use a joint angle measuring device using a strain gauge, conductive rubber, or a piezoelectric element.

[Invention or problem to be solved]

As described above, conventional treatment devices use stimulating electrodes and lead-out electrodes to perform treatment and measure the therapeutic effect separately, and image processing as a method of measuring the therapeutic effect is performed by the device or the large-scale This makes image analysis extremely difficult. Furthermore, when measuring with a strain gauge or the like, it is difficult to attach the instrument to the measurement site, and it is difficult to obtain reproducibility of the output displacement.

For this reason, it is very difficult to effectively measure the degree of success of stimulation, and there is a problem in that it is difficult to accurately grasp the patient's condition and provide appropriate treatment.

The present invention was made in order to eliminate the problems of the conventional methods as described above, and its purpose is to enable the subject to know the effective value of the treatment applied to the affected area at the same time as the treatment. The purpose of the present invention is to provide a treatment device that can promote conversion to other treatments or thoroughness of the treatment method at the same level of awareness by providing common information between the patient and the patient.

[Failure to solve the problem]

In order to achieve the above object, the treatment device of the present invention includes:
Applying a stimulation potential as a stimulation electrode to an electrode attached to a muscle disease site within a first predetermined time period, and measuring an action potential using the electrode as a derivation electrode within a next predetermined time period;
The structure is such that these stimulation and derivation are alternately switched.

[For production]

In the device for treating muscle diseases by stimulating muscle fibers of the present invention, a stimulation potential is applied as a stimulation electrode to an electrode attached to a muscle disease site, and then the same electrode is used as a lead-out electrode to stimulate the stimulation. Action potentials are measured due to the excitation of muscle fibers by electrical potentials. By switching these alternately, the waveforms of stimulation potentials and action potentials are recorded sequentially, and by comparing them in time series, it is possible to select the most effective treatment method for the subject.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings. Figure 1 shows
FIG. 2 is an explanatory diagram showing how electrodes are attached to diseased areas that are targets for implementation of the present invention, in which 1 is a subject, 2 is an elbow joint that is a muscle diseased area, and 3a and 3b are bands fixed to an arm. can be,
Electrodes 4a and 4b adhered to the skin surface are attached inside. 5a and 5b are lead wires to the outside of the electrodes 4a and 4b.

FIG. 2 is a block diagram of an electronic circuit used in carrying out the apparatus of the present invention, in which 6 is a gate circuit that switches the direction of input and output of signals to electrodes 4a and 4b attached to the muscle diseased area, and 7 8 is a clock pulse generator that generates a clock pulse that controls the on/off time of the gate of the gate circuit 6; 8 is a clock pulse generator that generates a stimulation potential or an action potential;
This is a DC amplifier that receives data via a DC amplifier and performs DC amplification.

9 is a variable low frequency oscillator which is a source of stimulation potential when the electrodes 4a and 4b are used as stimulation electrodes, and 10 is a variable low frequency oscillator for amplifying the output of the variable low frequency oscillator 9 to obtain a stimulation current necessary for treatment. The power amplifier 11 is a meter for monitoring the flowing stimulation current value. 12 is a DC amplifier 8
This is a display/recorder that displays/records stimulation potentials or action potentials from.

The time of the pulses supplied from the clock pulse generator 7 shall have a sufficiently wide adjustment range that can be determined by taking into account individual differences in the time constant of myoelectric potential and motor nerve conduction velocity.

The operation of the above configuration will be explained with reference to the diagram of the principle of operation shown in FIG. In order to excite the muscle fibers by applying a potential to the joint 2, which is the muscle diseased area, the electrodes 4a and 4b are used as stimulation electrodes, and the output from the variable low frequency oscillator 9 is converted to the required stimulation current value by the electrode amplifier IO. After electrode amplification, it is supplied to the gate circuit 6 via the current monitoring meter 11.

The gate circuit 6 alternately turns on and off in response to the clock pulse (pulse intensity to) from the clock pulse generator 7, but for example, the stimulation potential is passed only during the on time (as shown in FIG. 3(a)). V, ~■6), no potential is supplied during the off time. In this case, the stimulation potential is supplied in a pattern of gradually increasing and gradually decreasing.

On the other hand, during the off-time, the electrodes 4a and 4b are used as lead-out electrodes, and the action potential generated in the muscle fibers when the diseased muscle contracts due to the stimulation potential applied during the on-time (see Figure 3). Ron's v'.

~V'1) is detected, and the waveform is displayed and recorded by the display/recorder 12 via the DC amplifier 8. By comparing this displayed/recorded waveform with the displayed/recorded waveform of the stimulation potential supplied to the diseased area during the on-time of the gate circuit 6, the state of muscle movement in response to the applied stimulation can be known.

For example, even when muscle contraction activity is not directly generated, an action potential may occur, and the time difference between the action potential and the stimulation potential (1+ in Figure 3 (b)), the shape of the waveform, etc. This provides information that is extremely useful for diagnosis and determining appropriate medical treatment.

〔Effect of the invention〕

As explained above, according to the present invention, a stimulation potential is applied as a stimulation electrode to an electrode attached to a muscle diseased area, and then the same electrode can be electrically switched to stimulate the stimulation electrode. Since the electrode is used as a lead-out electrode to detect action potentials caused by the electrolyte, both potentials can be measured and recorded at the same time, making it possible to perform treatment and determine appropriate treatment at the same time.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing how the electrodes are attached to the diseased area targeted for implementation of the present invention, Fig. 2 is a block diagram of an electronic circuit used in implementing the device of the present invention, and Fig. 3 FIG. 2 is a waveform diagram illustrating the principle of treatment operation of the present invention. 4a, 4b...electrode, 6...gate circuit, 7...
Clock pulse generator, 8... DC amplifier, 9...
・Variable low frequency oscillator, 10...Power amplifier, 12.
...Display/recorder.

Claims (1)

[Claims] Applying a stimulation potential as a stimulation electrode to an electrode attached to a muscle disease site within a first predetermined time period, and measuring an action potential using the electrode as a derivation electrode within a next predetermined time period;
A device for treating muscle diseases by stimulating muscle fibers, characterized in that stimulation and derivation are alternately switched.